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Table 1 Comparative study of the biological efficiency in terms of vasorelaxant effects of the various enriched extracts

From: In vitro vasorelaxation mechanisms of bioactive compounds extracted from Hibiscus sabdariffa on rat thoracic aorta

  Crude extract Ethyl acetate extract Butanolic extract Residual marc
EC 50 (mg/ml) 4,95.10-2 ± 1,34 4,035.10-2 ± 0,86 0,957.10-2 ± 0,6 5,579.10-2 ± 0,7
E max (%) 66,57 ± 8,07 34,48 ± 10,59 94,3 ± 0,97 82,44 ± 3,94
  1. The values indicate the mean ± SEM of the EC50 and the Emax obtained from 6-8 experiments.